/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/IMessageSanitizerInterface.h
Query for a blocked user status between a local and remote user
void QueryBlockedUser ( int32 LocalUserNum, const [FString](API\Runtime\Core\Containers\FString) & FromUserId, const [FString](API\Runtime\Core\Containers\FString) & FromPlatform, const [FOnQueryUserBlockedResponse](API\Plugins\OnlineSubsystem\Interfaces\FOnQueryUserBlockedResponse) & CompletionDelegate )